Figure 2: Software and data architecture of distillation PEA with
integrated ,ML
As described before, the
distillation PEA is implemented to the POL via an open standard, the
MTP. This architecture can be used additionally to implement the ML in a
faster way, as the OPC/UA server and needed variables already exists and
the location is completely described in the MTP file. Like this, the ML
script is basing on the existing architecture as an add-on for
monitoring and classification of the set operation point. Furthermore,
it is conceivable to implement a feedback loop as control for the
distillation column. The ML script is then acting as a controller of the
PEA. For the compliance with the MTP concept, the service of the
distillation PEA needs to be adjusted with a new procedure. Within this
new procedure, the spinning band speed is not anymore given by the POL,
but self-adjusted by the PEA logic with the ML script as a controller
itself. However, this is not implemented yet, since the scope was to
ensure the applicability of the forecast and classification first.